4. When hiking in deluge conditions or serious sandstorms, use a raincover on your case, or store the camera beneath your pack's top flap.

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5. Open rain-wet camera cases and sun-dry the interior to prevent humidity from being forced into the camera by external heat.

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6. Dirty cases just force grit and oils into your camera. Machine wash them regularly on gentle cycle, no soap, with zips open. Let them air dry overnight or longer.

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7. Don't set cameras and cases on or near the ground in windy or dusty conditions, where "saltation" moves more detritus.

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8. During trail rests, put the chest pack on top of your backpack to keep dirt off the case.

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9. Around camp, hang your camera case off a tripod or tree branch.

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10. For dramatic photos in wind or sandstorms, make an impromptu cover with ziplocks and tape. Vent it regularly, or use dessicant packets, to prevent condensation.

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11. If your camera gets sandy or dusty, use a damp cotton bandanna, paper towel or toilet tissue to clean the exterior. Dry wet cameras the same way using dry wipes.

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12. If your camera gets seriously wet, put it in a ziplock with dessicant packets or even dry paper towel or toilet tissue, and suck all the air out, and seal it. Moisture will be drawn out of the camera.

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13. If lenses get interior condensation, take the lens cap off and set them facing straight at the sun. In most conditions the internal fog will clear in minutes.